import java.util.Scanner;

public class Homework2 {
    public static void main(String[] args) {
        Scanner a=new Scanner(System.in);
        System.out.println("输入任意英寸值");
        double num=a.nextInt();
        double num1=num*2.54;
        System.out.println("输出的厘米值为"+num1);
    }
}
